# import time

# t0 = time.time()

# time.sleep(4)

# print(time.time() - t0)

import json

with open("/home/ninetripod/catkin_ws/src/uav/log/radar.json", "a+") as f:
    f.write("\n\n")
    json.dump([1,3,4,5,6, 7], f, indent=2)